scholarly journals Kinked crack analysis by a hybridized boundary element/boundary collocation method

2010 ◽  
Vol 47 (7-8) ◽  
pp. 922-933 ◽  
Author(s):  
Mohammad Fatehi Marji ◽  
Isa Dehghani
Keyword(s):  
Boundary Element ◽  
Collocation Method ◽  
Crack Analysis ◽  
Boundary Collocation Method ◽  
Kinked Crack ◽  
Element Boundary

A boundary element for crack analysis at a bimaterial interface

1994 ◽  
Vol 49 (3) ◽  
pp. 405-410 ◽  
Author(s):  
W.J. He ◽  
J.E. Bolander ◽  
D.S. Lin ◽  
H.J. Ding
Keyword(s):  
Boundary Element ◽  
Bimaterial Interface ◽  
Crack Analysis

A Two-Stage Model for Energy Transmission and Radiation Analysis of Laminated Composite Double-Leaf Structures

2017 ◽  
Vol 139 (4) ◽  
Author(s):  
Atanu Sahu ◽  
Arup Guha Niyogi ◽  
Michael Rose ◽  
Partha Bhattacharya
Keyword(s):  
Boundary Element ◽  
Laminated Composite ◽  
Air Gap ◽  
Transmission Characteristics ◽  
Energy Transmission ◽  
Two Stage ◽  
Second Stage ◽  
Complex Boundary ◽  
Radiation Behavior ◽  
Element Boundary

A two-stage numerical model is developed to understand the energy transmission characteristics through a finite double-leaf structure placed in an infinite baffle subjected to an external excitation and subsequently the sound radiation behavior of the same into the semi-infinite receiving side. In the first stage, a mobility-based coupled finite element–boundary element (FE–BE) technique is implemented to model the energy transmission from the primary panel to the secondary panel through an air gap. In the second stage, a separate boundary element (BE)-based model is developed to estimate the sound power radiated by the radiating (secondary) panel into the receiving side which is assumed to be semi-infinite. The advantage of the proposed approach is that it is sufficient to mesh the structural panels alone, thereby reducing the problem dimensions and the difficulty in modeling. Moreover, the developed model can be easily implemented for structures made up of various constituent materials (isotropic or laminated composites) with complex boundary conditions and varying panel geometries. Numerical experiments are carried out for different material models by varying air-gap thicknesses and also by introducing alternate energy transmission path in terms of mechanical links and the obtained results are discussed.

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